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What is Gene Expression ?
Gene expression is the process by which a gene is activated to produce a certain protein. Cells are able to respond to changes in the environment in two ways: 1.) by controlling the production of enzyme molecules that cause expression of a gene; and 2.) by controlling the activities of enzymes that are already present through the use of feedback mechanisms.
The control mechanism for gene expression is very different in prokaryotic cells than in eukaryotes. The way in which a specific gene expresses itself is of particular interest to scientists. Many diseases have been found to be genetically-based. Therefore, the ability to control the form and behavior of a cell or an organism would prove especially useful in the prevention and cure of disease.
One area that holds real promise in the near future is in the cloning of new tissues or organs to replace those that have become injured or diseased. Cells from the body can be used to produce clones because each cell contains a full complement of DNA. Cloning involves removal of a cell from an organism, and then providing that cell with all of the nutrients, gases, and physical conditions necessary for its growth, development, and reproduction.
The larger question is: since each and every cell has the same DNA information, what are the determining factors that cause a newly formed skin cell to form the specialized structures that enable it to perform the functions of skin, rather than, say, the types of protein structures that characterize muscle cells?
In genetic recombination by crossing over what is the difference between parental gametes and recombinant gametes? Parental gametes are those gametes that keep the original lin
Assume that you have a stock solution of epinephrine at a concentration of 1mg/ml. Further assume that there are 20 drops/ml. a. Calculate the number of drops of the stock solution
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Q. Is Acetylcholine used in consciousness? Cholinergic mechanisms are important in wakefulness and cortical activation. In general, increased acetylcholine is associated with w
Explain Skeletal muscle Skeletal muscle has low activity of glucose-6-phosphate dehydogenase. Yet, like most other tissues it can synthesize ribose-5-phosphate. This is.
Water is considered a universal solvent because- Select one: a. it can dissolve polar and non-polar compounds b. it can dissolve both positively and negatively charged ions a
What are the processes that autotrophic beings use to produce organic material from inorganic substances? The Autotrophic beings make organic material by photosynthesis or by c
Explain the Conjunctival impression Cytology (CIC)? Conjunctival impression cytology (CIC) is a simple, rapid and inexpensive method which is suitable for a field survey. By to
You are working with plants that have either hairy (dominant) or 'bald' (recessive) flowers. Hairy flowers have little hairs on them that make the flowers look fuzzy, bald flowers
Nuclear run-on is a technique used to estimate the relative rate of the transcription of a given gene, as opposed to steady-state level of the mRNA transcript (which is influenced
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